xref: /freebsd/sys/compat/linux/linux_misc.h (revision e9e8876a4d6afc1ad5315faaa191b25121a813d7)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2006 Roman Divacky
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef _LINUX_MISC_H_
32 #define	_LINUX_MISC_H_
33 
34 #include <sys/sysctl.h>
35 
36 #define	LINUX_MAX_PID_NS_LEVEL	32
37 
38 				/* bits per mask */
39 #define	LINUX_NFDBITS		sizeof(l_fd_mask) * 8
40 
41 /*
42  * Miscellaneous
43  */
44 #define	LINUX_NAME_MAX		255
45 #define	LINUX_MAX_UTSNAME	65
46 
47 #define	LINUX_CTL_MAXNAME	10
48 
49 /* defines for prctl */
50 #define	LINUX_PR_SET_PDEATHSIG  1	/* Second arg is a signal. */
51 #define	LINUX_PR_GET_PDEATHSIG  2	/*
52 					 * Second arg is a ptr to return the
53 					 * signal.
54 					 */
55 #define	LINUX_PR_GET_DUMPABLE	3
56 #define	LINUX_PR_SET_DUMPABLE	4
57 #define	LINUX_PR_GET_KEEPCAPS	7	/* Get drop capabilities on setuid */
58 #define	LINUX_PR_SET_KEEPCAPS	8	/* Set drop capabilities on setuid */
59 #define	LINUX_PR_SET_NAME	15	/* Set process name. */
60 #define	LINUX_PR_GET_NAME	16	/* Get process name. */
61 #define	LINUX_PR_GET_SECCOMP	21
62 #define	LINUX_PR_SET_SECCOMP	22
63 #define	LINUX_PR_CAPBSET_READ	23
64 #define	LINUX_PR_SET_NO_NEW_PRIVS	38
65 #define	LINUX_PR_SET_PTRACER	1499557217
66 
67 #define	LINUX_MAX_COMM_LEN	16	/* Maximum length of the process name. */
68 
69 /* For GET/SET DUMPABLE */
70 #define	LINUX_SUID_DUMP_DISABLE	0	/* Don't coredump setuid processes. */
71 #define	LINUX_SUID_DUMP_USER	1	/* Dump as user of process. */
72 #define	LINUX_SUID_DUMP_ROOT	2	/* Dump as root. */
73 
74 #define	LINUX_MREMAP_MAYMOVE	1
75 #define	LINUX_MREMAP_FIXED	2
76 
77 #define	LINUX_PATH_MAX		4096
78 
79 /*
80  * Non-standard aux entry types used in Linux ELF binaries.
81  */
82 
83 #define	LINUX_AT_PLATFORM	15	/* String identifying CPU */
84 #define	LINUX_AT_HWCAP		16	/* CPU capabilities */
85 #define	LINUX_AT_CLKTCK		17	/* frequency at which times() increments */
86 #define	LINUX_AT_SECURE		23	/* secure mode boolean */
87 #define	LINUX_AT_BASE_PLATFORM	24	/* string identifying real platform, may
88 					 * differ from AT_PLATFORM.
89 					 */
90 #define	LINUX_AT_RANDOM		25	/* address of random bytes */
91 #define	LINUX_AT_HWCAP2		26	/* CPU capabilities, second part */
92 #define	LINUX_AT_EXECFN		31	/* filename of program */
93 #define	LINUX_AT_SYSINFO	32	/* vsyscall */
94 #define	LINUX_AT_SYSINFO_EHDR	33	/* vdso header */
95 
96 #define	LINUX_AT_RANDOM_LEN	16	/* size of random bytes */
97 
98 /* Linux sets the i387 to extended precision. */
99 #if defined(__i386__) || defined(__amd64__)
100 #define	__LINUX_NPXCW__		0x37f
101 #endif
102 
103 /* Scheduling policies */
104 #define	LINUX_SCHED_OTHER	0
105 #define	LINUX_SCHED_FIFO	1
106 #define	LINUX_SCHED_RR		2
107 
108 #define	LINUX_MAX_RT_PRIO	100
109 
110 struct l_new_utsname {
111 	char	sysname[LINUX_MAX_UTSNAME];
112 	char	nodename[LINUX_MAX_UTSNAME];
113 	char	release[LINUX_MAX_UTSNAME];
114 	char	version[LINUX_MAX_UTSNAME];
115 	char	machine[LINUX_MAX_UTSNAME];
116 	char	domainname[LINUX_MAX_UTSNAME];
117 };
118 
119 #define LINUX_UTIME_NOW			0x3FFFFFFF
120 #define LINUX_UTIME_OMIT		0x3FFFFFFE
121 
122 extern int stclohz;
123 
124 #define	LINUX_WNOHANG		0x00000001
125 #define	LINUX_WUNTRACED		0x00000002
126 #define	LINUX_WSTOPPED		LINUX_WUNTRACED
127 #define	LINUX_WEXITED		0x00000004
128 #define	LINUX_WCONTINUED	0x00000008
129 #define	LINUX_WNOWAIT		0x01000000
130 
131 #define	__WNOTHREAD		0x20000000
132 #define	__WALL			0x40000000
133 #define	__WCLONE		0x80000000
134 
135 /* Linux waitid idtype  */
136 #define	LINUX_P_ALL		0
137 #define	LINUX_P_PID		1
138 #define	LINUX_P_PGID		2
139 
140 #define	LINUX_RLIMIT_LOCKS	10
141 #define	LINUX_RLIMIT_SIGPENDING	11
142 #define	LINUX_RLIMIT_MSGQUEUE	12
143 #define	LINUX_RLIMIT_NICE	13
144 #define	LINUX_RLIMIT_RTPRIO	14
145 #define	LINUX_RLIMIT_RTTIME	15
146 
147 #define	LINUX_RLIM_INFINITY	(~0UL)
148 
149 /* Linux getrandom flags */
150 #define	LINUX_GRND_NONBLOCK	0x0001
151 #define	LINUX_GRND_RANDOM	0x0002
152 
153 /* Linux syslog flags */
154 #define	LINUX_SYSLOG_ACTION_READ_ALL	3
155 
156 #if defined(__aarch64__) || (defined(__amd64__) && !defined(COMPAT_LINUX32))
157 int linux_ptrace_status(struct thread *td, int pid, int status);
158 #endif
159 void linux_to_bsd_waitopts(int options, int *bsdopts);
160 struct thread	*linux_tdfind(struct thread *, lwpid_t, pid_t);
161 
162 struct syscall_info {
163 	uint8_t op;
164 	uint32_t arch;
165 	uint64_t instruction_pointer;
166 	uint64_t stack_pointer;
167 	union {
168 		struct {
169 			uint64_t nr;
170 			uint64_t args[6];
171 		} entry;
172 		struct {
173 			int64_t rval;
174 			uint8_t is_error;
175 		} exit;
176 		struct {
177 			uint64_t nr;
178 			uint64_t args[6];
179 			uint32_t ret_data;
180 		} seccomp;
181 	};
182 };
183 
184 #endif	/* _LINUX_MISC_H_ */
185